| Type | NF125-UV | NF250-UV | NF400-UEW | NF800-UEW |
| Rated data | Rated current I n [A] at ambient temperature | 40 °C | 15, 20, 30, 40, 50, 60, 75, 100, 125 Fixed | 125, 150, 175, 200, 225, 250 Fixed | 200–400 Adjustable | 500–1000 Adjustable |
| Number of poles | 3/4 | 3/4 | 3/4 | 3/4 |
| Rated insulation voltage U i [V] | AC | 690 | 690 | 690 | 690 |
| Rated breaking capacity [kA] ( I cu / I cs ) | IEC/EN 60947-2 | AC (50/60 Hz) | 690 V | 10/10 | 15/15 | 35/35 | 25/13 |
| 500 V | 200/200 | 200/200 | 170/170 | 65/33 |
| 440 V | 200/200 | 200/200 | 200/200 | 85/43 |
| 400 V | 200/200 | 200/200 | 200/200 | 85/43 |
| 230 V | 200/200 | 200/200 | 200/200 | 125/63 |
| DC | 250 V | — | — | B | B |
| Utilization category | A | A | 5/0.25 | 20/0.3 |
| Rated impulse withstand voltage U imp [kV] | 8 | 8 | 8 | 8 |
| Pollution degree | 3 | 3 | 3 | 3 |
| Reverse connection | O | O | O | O |
| Suitable for isolation | O | O | O | O |
| Mechanical data | Dimensions [mm] | a | 90/120 | 105/140 | 140/280 | 210/280 |
| b | 191 | 240 | 297/322 | 406 |
| c | 68 | 68 | 200 | 140 |
| ca | 92 | 92 | 252 | 190 |
| Weight [kg] | 1.5/1.9 | 2.7/3.7 | 16.7/26.1 | 23.5/30.7 |
| Cassette- type accessories | Alarm switch | (AL) | O | O | O | O |
| Auxiliary switch | (AX) | O | O | O | O |
| Shunt trip | (SHT) | O | O | O | O |
| Undervoltage trip | Non-synchronous closing | (UVT-N) | O | — | O | O |
| Synchronous closing | (UVT-S) | — | O | O | O |
| Accessories connection | With terminal block | (SLT) | O | O | O | O |
| With internal terminal type | O | O | O | O |
| Installation and connection | Front | Screw terminal (standard) | O | O | O | O |
| Solderless terminal | O | O | O | — |
| Busbar terminal | — | — | O /— | — |
| Rear | (B) | O | O | O | O |
| Plug-in | Rear | (PM) | —/ O | — | O | O |
| Rear front IP 20 with auto trip | (PM-IP) | O /— | O /— | — | O |
| Built-in accessories | Pre-alarm-contact output a | (PAL) | — | — | — | O |
| Overcurrent trip alarm a | (OAL) | — | — | — | O |
| External accessories | External operating handle | Door mounting | (V) | O | O | O | O |
| Mounted on breaker | (R) | O | O | O | — |
| Electrical operation device | (MDS) | O | O | O | O |
| Handle lock device | Handle lock for use with padlock | (HL) | O | O | O | — |
| (HL-S) | O | O | O | O |
| Lock cover | (LC) | O | O | O | O |
| Terminal cover | Large | (TC-L) | O | O | LR, GL, BV, AB | LR, GL, AB |
| Small | (TC-S) | O | O | Electronic | Electronic |
| For rear connection | (BTC) | O | O | Equipped | Equipped |
| For plug-in | (PTC) | O | O | O | O |
| Mechanical interlock | (MI) | O | O | O | O |
| Insulating barrier | Between phases (Standard) | (BA-F) | O | O | O | O |
| Adapter for IEC 35 mm rail | — | — | O /— | O |
| Others | CE marking | Self-declaration | Self-declaration | Self-declaration | Self-declaration |
| CCC recognition | — | — | Recognized | Recognized |
| Automatic tripping device | Thermal-magnetic | Thermal-magnetic | Thermal-magnetic | Thermal-magnetic |
| Trip button | Equipped | Equipped | Equipped | Equipped |
a Both PAL and OAL is not available. Only one specified. b Others on request. c On request. d Use of 3- or 4-pole breaker for DC, see wiring diagram on the next page.
Missing specifications accord. to IEC/EN 60947-2 on request.
